Stadion: Court 10 Round: 27 Ground: Clay
| ITF - M15 - Warmbad-Villach | 2021/08/19 07:55 | Luigi Sorrentino v Sebastian Prechtel | 4-6,6-3,1-6 |
| ITF - M15 - Warmbad-Villach | 2021/08/18 13:05 | Giacomo Revelli v Sebastian Prechtel | 3-6,3-6 |
| ITF - M15 - Frederiksberg | 2021/08/05 12:25 | August Holmgren v Sebastian Prechtel | 6-3,3-6,6-3 |
| ITF - M15 - Frederiksberg | 2021/08/03 10:05 | Sebastian Prechtel v Karl Friberg | 6-1,6-1 |
| ITF - M15 - Vejle | 2021/07/28 11:50 | Sebastian Prechtel v Guy Den Ouden | 2-6,2-6 |
| ITF - M15 - L'Aquila | 2021/07/15 07:00 | Luciano Darderi v Sebastian Prechtel | 6-7,6-3,6-2 |
| ITF - M15 - L'Aquila | 2021/07/14 08:00 | Sebastian Prechtel v Alessandro Procopio | 6-2,6-4 |
| ITF - M25 - Velenje | 2021/07/08 08:00 | Sebastian Prechtel v Gonzalo Lama | 4-6,1-6 |
| ITF - M15 - Warmbad-Villach | 2021/08/19 12:55 | Matteo Donati v Franco Ribero | 6-1,6-1 |
| ITF - M15 - Warmbad-Villach | 2021/08/17 13:25 | Matteo Donati v Niklas Rohrer | 6-3,6-3 |
| Challenger - San Marino | 2021/08/08 09:45 | Alexander Shevchenko v Matteo Donati | 6-3,3-6,7-5 |
| Challenger - Iasi | 2021/07/14 11:05 | Felipe Meligeni Rodrigues Alves v Matteo Donati | 6-3,6-3 |
| Challenger - Iasi | 2021/07/12 09:55 | Stefan Palosi v Matteo Donati | 4-6,4-6 |
| ITF - M25 - Wroclaw | 2021/06/27 14:00 | Matteo Donati v Dominik Kellovsky | 6-2,6-7,6-10 |
| ITF - M15 - Kairo | 2021/04/15 13:20 | Lukas Krainer v Matteo Donati | 6-2,4-6,6-4 |
| ITF - M15 - Kairo | 2021/04/14 14:20 | Alex Barrena v Matteo Donati | 5-7,1-6 |